Shangjie Lai writes about the role of migration in transmission routes of malaria between sub-Saharan Africa and China. The international spread of infectious diseases including Plasmodium falciparum malaria has been accelerated by increasing human mobility via air travel over recent decades. An emerging route of P. falciparum infection is from Africa to China by Chinese […]

The global population is ageing and many experts predict that this will have some negative consequences for society. But in new research, we examine whether the demographic transition also has important positive consequences, including the promotion and development of democracy. In 1970, only 8 per cent of the world’s population was classified as ‘old’ (aged […]